id:A103667 - OEIS Search Results

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Primes p such that the largest prime divisor of p-1 is greater than the largest prime divisor of p+1.

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4

7, 11, 23, 29, 31, 47, 53, 59, 71, 79, 83, 89, 103, 107, 127, 131, 139, 149, 167, 173, 179, 191, 199, 223, 227, 233, 239, 263, 269, 293, 307, 311, 317, 347, 349, 359, 367, 373, 383, 389, 419, 431, 439, 449, 461, 467, 479, 499, 503, 509, 557, 563, 569, 571, 587 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=7 because the largest prime divisor of 6 is greater than the largest` `prime divisor of 8.`
	CROSSREFS	`Cf. A023503 greatest prime divisor of n-th prime - 1, A023509 greatest prime divisor of n-th prime + 1, A103666.` `Sequence in context: A035704 A081352 A039511 this_sequence A033207 A095084 A067790` `Adjacent sequences: A103664 A103665 A103666 this_sequence A103668 A103669 A103670`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Feb 19 2005`

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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